#1
What is the purpose of the 'for' loop in programming?
To declare variables
To create functions
To iterate over a sequence of values
To define conditional statements
#2
In which programming construct are 'while' loops commonly used?
Declaring functions
Handling exceptions
Performing repetitive tasks
Defining classes
#3
What does the term 'iteration' refer to in programming?
A programming language feature
A process of repeating a set of instructions
A type of variable
A data type
#4
In Python, what is the purpose of the 'range()' function in a 'for' loop?
To generate a sequence of numbers
To define the loop condition
To perform mathematical operations
To create conditional statements
#5
In JavaScript, what is the purpose of the 'do-while' loop?
To declare variables
To create functions
To iterate over an array
To ensure a block of code is executed at least once
#6
What is the concept of 'loop control variables' in programming?
Variables used to control the execution of loops
Variables that can only be declared inside loops
Variables with global scope
Variables that store loop indexes
#7
What is the purpose of the 'break' statement in a loop?
To end the program
To exit the loop prematurely
To skip the next iteration
To switch to another loop
#8
What is variable scope in programming?
The range of values a variable can store
The visibility of a variable within a program
The number of times a variable is used
The lifespan of a variable in memory
#9
What is the significance of the 'continue' statement in a loop?
To terminate the loop
To skip the remaining code in the loop and move to the next iteration
To restart the loop from the beginning
To print the current loop index
#10
Explain the concept of 'global' and 'local' variables in programming.
Global variables are accessible throughout the entire program, while local variables are limited to a specific function or block.
Global variables are only used in loops, while local variables are used in conditional statements.
Global variables have a longer lifespan than local variables.
Local variables can be accessed by any function in the program.
#11
Explain the difference between 'post-test' and 'pre-test' loops.
There is no difference; they are interchangeable terms
'post-test' loops check the condition after the loop body is executed, while 'pre-test' loops check before
'pre-test' loops are faster than 'post-test' loops
'post-test' loops are used for conditional statements, while 'pre-test' loops are used for iteration
#12
What is the purpose of the 'foreach' loop in languages like PHP?
To create functions
To iterate over a sequence of values, like arrays
To define conditional statements
To declare variables
#13
What is the difference between 'for' and 'while' loops?
There is no difference; they are interchangeable
'for' loops are used for iteration, while 'while' loops are used for conditional statements
'while' loops are faster than 'for' loops
'for' loops can only iterate over arrays
#14
What is an 'iterator' in programming languages like Python?
A function that performs mathematical operations
An object that can be iterated (looped) over
A conditional statement
A variable that stores iterative values
#15
In Java, what is the difference between 'break' and 'return' statements?
'break' is used to exit a loop, while 'return' is used to exit a function or method
'return' is used to exit a loop, while 'break' is used to exit a function or method
They are interchangeable terms with no difference
Both 'break' and 'return' are used to exit loops and functions in Java
#16
What is the purpose of the 'yield' statement in Python?
To terminate the program
To skip iterations in a loop
To generate values in a generator function
To declare variables
#17
What is the significance of the 'volatile' keyword in C programming?
To declare constant variables
To indicate that a variable's value may change at any time without any action being taken by the code
To define loop conditions
To create functions
#18
What is the purpose of the 'finally' block in a try-catch-finally statement in Java?
To declare variables
To define loop conditions
To specify code that will be executed regardless of whether an exception is thrown or not
To create functions